<template>
  <div class="users-container">
    <!-- 面包屑导航区域 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{path: './'}">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>

    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加按钮 -->
      <el-row :gutter="20">
        <el-col :span="10">
          <el-input placeholder="请输入" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addDialogVisible=!addDialogVisible">添加用户</el-button>
        </el-col>
      </el-row>
      <p></p>

      <!-- 用户列表区域 -->
      <el-table :data="userList" border stripe>
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template v-slot="slotProps">
            <el-switch v-model="slotProps.row.mg_state" active-color="" inactive-color="" @change="userStateChanged(slotProps.row)"></el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template v-slot="slotProps">
            <!-- 修改按钮 -->
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(slotProps.row.id)"></el-button>
            <!-- 删除按钮 -->
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(slotProps.row.id)"></el-button>
            <!-- 分配角色按钮 -->
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="showAssignRoleDialog(slotProps.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <p></p>
      <!-- 分页区域 -->
      <el-pagination @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[10,20,50,100]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total"
      ></el-pagination>
    </el-card>

    <!-- 添加用户的对话框 -->
    <el-dialog title="添加用户" :visible.sync="addDialogVisible" width="40%"
     @close="addDialogClosed" :close-on-click-modal="false">
      <el-form :model="addForm" :rules="addFormRules"
        ref="addFormRef" label-width="70px"
      >
        <el-form-item label="用户名" prop="username">
          <el-input v-model="addForm.username"></el-input>
        </el-form-item>
        <el-form-item label="密码" prop="password">
          <el-input v-model="addForm.password" type="password"></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="addForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="addForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 对话框底部 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="addDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="addUser">确定</el-button>
      </span>
    </el-dialog>

    <!-- 修改用户的对话框 -->
    <el-dialog title="修改用户" :visible.sync="editDialogVisible" width="40%"
     @close="editDialogClosed" :close-on-click-modal="false">
      <el-form :model="editForm" :rules="editFormRules"
        ref="editFormRef" label-width="70px"
      >
        <el-form-item label="用户名">
          <el-input v-model="editForm.username" disabled></el-input>
        </el-form-item>
        <el-form-item label="邮箱" prop="email">
          <el-input v-model="editForm.email"></el-input>
        </el-form-item>
        <el-form-item label="手机" prop="mobile">
          <el-input v-model="editForm.mobile"></el-input>
        </el-form-item>
      </el-form>

      <!-- 对话框底部 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="editDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="saveEditUser">确定</el-button>
      </span>
    </el-dialog>

    <!-- 分配用户角色的对话框 -->
    <el-dialog
      title="分配角色" :visible.sync="assignRoleDialogVisible" width="40%"
      @close="onAssignRoleDialogClosed" :close-on-click-modal="false"
    >
      <div>
        <p>当前的用户：{{ userInfo.username }}</p>
        <p>当前的角色：{{ userInfo.role_name }}</p>
        <p>分配信的角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option
              v-for="roleItem in roleList"
              :key="roleItem.id" :label="roleItem.roleName"
              :value="roleItem.id"
            ></el-option>
          </el-select>
        </p>
      </div>
      <!-- 对话框底部 -->
      <span slot="footer" class="dialog-footer">
        <el-button @click="assignRoleDialogVisible = false">取消</el-button>
        <el-button type="primary" @click="assignRole">确定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  name: 'Users',
  data() {
    const emailValidator = (rule, value, cb) => {
      const regEmail = /^([a-zA-Z]|[0-9])(\w|-)+@[a-zA-Z0-9]+\.([a-zA-Z]{2,4})$/
      if (regEmail.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的邮箱'))
    }

    const mobilValidator = (rule, value, cb) => {
      const regMobile = /^(0|86|17951)?(13[0-9]|15[0-9]|17[678]|18[0-9]|14[57])[0-9]{8}$/
      if (regMobile.test(value)) {
        return cb()
      }
      cb(new Error('请输入合法的手机号'))
    }

    return {
      // 获取数据的参数对象
      queryInfo: {
        query: '',
        pagenum: 1,
        pagesize: 10
      },
      userList: [],
      total: 0,
      currentPage: 0,
      pageSize: 10,
      // 控制添加用户对话框的显示
      addDialogVisible: false,
      addForm: {
        username: '',
        password: '',
        email: '',
        mobile: ''
      },
      addFormRules: {
        username: [
          { required: true, message: '请输入用户名' },
          { min: 3, max: 10, message: '用户名的长度为3~10个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '请输入密码', trigger: 'blur' },
          { min: 6, max: 10, message: '密码的长度为3~10个字符', trigger: 'blur' }
        ],
        email: [
          { required: true, message: '请输入邮箱' },
          { validator: emailValidator, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号' },
          { validator: mobilValidator, trigger: 'blur' }
        ]
      },
      // 编辑用户信息对话框
      editDialogVisible: false,
      editForm: {},
      editFormRules: {
        email: [
          { required: true, message: '请输入邮箱' },
          { validator: emailValidator, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号' },
          { validator: mobilValidator, trigger: 'blur' }
        ]
      },
      // 分配角色
      assignRoleDialogVisible: false,
      userInfo: {},
      roleList: [],
      selectedRoleId: ''
    }
  },
  created() {
    this.getUserList()
  },
  methods: {
    async getUserList() {
      const { data: res } = await this.$http.get('users', { params: this.queryInfo })
      if (res.meta.status !== 200) return this.$message.error('获取用户列表失败')
      this.userList = res.data.users
      this.total = res.data.total
    },
    handleSizeChange(newSize) {
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    handleCurrentChange(newPage) {
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    // 监听 switch 开关的状态变化
    async userStateChanged(userInfo) {
      const { data: res } = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if (res.meta.status !== 200) {
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error('更新用户状态失败')
      }
      return this.$message.success('更新用户状态成功')
    },
    // 关闭添加用户对话框时清除校验提示
    addDialogClosed() {
      this.$refs.addFormRef.resetFields()
    },
    // 添加用户处理
    addUser() {
      this.$refs.addFormRef.validate(async valid => {
        if (!valid) return

        const { data: res } = await this.$http.post('users', this.addForm)
        if (res.meta.status !== 201) {
          return this.$message.error('添加用户失败')
        }
        this.addDialogVisible = false
        this.$message.success('添加用户成功')
        this.getUserList()
      })
    },
    // 显示编辑对话框
    async showEditDialog(id) {
      const { data: res } = await this.$http.get(`users/${id}`)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败')
      }
      this.editForm = res.data
      this.editDialogVisible = true
    },
    // 更新用户处理
    saveEditUser() {
      this.$refs.editFormRef.validate(async valid => {
        if (!valid) return
        //
        const { data: res } = await this.$http.put(`users/${this.editForm.id}`, this.editForm)
        if (res.meta.status !== 200) {
          return this.$message.error('更新用户信息失败')
        }
        this.editDialogVisible = false
        this.getUserList()
        this.$message.success('更新用户信息成功')
      })
    },
    // 关闭编辑对话框时清除校验提示
    editDialogClosed() {
      this.$refs.editFormRef.resetFields()
    },
    // 删除用户
    async removeUserById(id) {
      const confirmResult = await this.$confirm('是否永久删除该用户？', '提示', {
        confirmButtonText: '确定',
        cancelButtonText: '取消',
        type: 'warning'
      }).catch(err => err)

      // confrim / cancel
      if (confirmResult !== 'confirm') {
        return this.$message.info('已取消删除')
      }

      const { data: res } = await this.$http.delete(`users/${id}`)
      if (res.meta.status !== 200) {
        this.$message.error('删除用户失败')
      }
      this.getUserList()
      this.$message.success('删除用户成功')
    },
    async showAssignRoleDialog(userInfo) {
      this.userInfo = userInfo

      // 获取所以角色列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败')
      }

      this.roleList = res.data
      this.assignRoleDialogVisible = true
    },
    async assignRole () {
      // 如果没有选择
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色')
      }

      const { data: res } = await this.$http.put(`users/${this.userInfo.id}/role`, {
        rid: this.selectedRoleId
      })
      if (res.meta.status !== 200) {
        return this.$message.error('分配角色失败')
      }

      this.$message.success('分配角色成功')
      this.getUserList()
      this.assignRoleDialogVisible = false
    },
    onAssignRoleDialogClosed () {
      this.userInfo = {}
      this.selectedRoleId = ''
    }
  }
}
</script>

<style lang="less" scoped>

</style>
